Manhole or like structure



Oct. 13., 1925- A; B. FEY

MANHOLE OR LIKE STRUCTURE Filed Mamh 19, 1923 avwemtoz a QM Patented Oct. 13, 1925.

UNITED STATES PATENT OFFICE.

ANTHONY B. FEY, OF CINCINNATI, OHIO, ASSIGNOR TO AUGUSTINE DAVIS, JR., OF CO'VINGTON, KENTUCKY.

MANHOLE OR LIKE STRUCTURE.

Application filed March 19, 1923.

T (ZZZ 007mm it may concern:

Be it known that I, ANTHONY B. FEY, a citizen of the United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Manhole or Like Structure, of which the following is a specification.

The invention relates to manhole construe tions for tanks and the like, and is more particularly an improvement on and within the invention of the patent to l-\ugustine Davis, Jr.. No. 1,329,040 of January 27, 1920.

That patent discloses a flanged-out neck on a tank or shell, and a ring having a thick thin innerportion which autogenously lap-welded to the flanged-out neck, in such manner that the closure-receiving portion does not become distorted by the welding operation, and an excellent. strong construction is secured, amply capable of supporting even the heaviest manhole cover and its appurtenances without sagging. The construction is integral and absolutely tight.

As heretofore made and as shown in the said patent, the parts have been so related that the thin portion of the ring projected within the neck and was welded on the outside to the neck edge. This is entirely prac- 30 ticable and has been satisfactory in the main;

but diiticulty has been experienced in securing uniformly neat welds, which is an important consideration in this class f work, and the manufacturer has accordingly been seeking for some time for a. means of improving the construction in this respect.

The present construction aims to overcome the stated difliculty and to provide a construction which is not only easier and cheaper to make, with less skilled labor, but even stronger than -formerly. This involves fitting the thin portion of the ring over the neck and forming the weld on the inside iu stead of outside as before. In this way the ring more firmly supported, and there is a great improvement in the appearance of the job since all that is visible of the joint is the clean straight line formed by the almostfeather edge of the manhole ring encircling the enclosed neck.

ln the accompanying drawings, forming a part hereof:

Fig. 1 is a view of the ring, partly in verfical section and partly in elevation, before being-welded in place;

outer portion to receive the closure and a Serial No. 625,938.

Fig. 2 is a vertical section of a portion of a tank and its flanged-out neck to receive the ring;

Fig. 3 is a vertical section through the completed structure; and

Fig. 4; is an elevation thereof.

A tank or sheet-metal shell is marked 1, and 2 is a manhole or other opening therein, surrounded by a ne'k 7, preferably formed by Hanging out the shell on a concave taper.

The manhole ring 5 consists of two differentiated portions, namely an outer, comparatively massive part. bearing an internal screw-thread 3 to receive the closure, and an inner, thin portion 9, the ring being externally cylindrical and the reduction in thickness being on the inside.

ln manufacture the portion 9 is slipped over the neck '7, seating on the taper thereof,

and the parts are united by an autogenous weld 10 on the inside, between the edge of the neck and the inner surface of the portion 9 of the ring. The improved external appearance will be apparent from Fig. 4. The edge of the neck may be irregular and the weld may also be more or less irregular, but as they are entirely concealed this is immaterial. The perfectly horizontal joint line on the outside is marked a.

The portion 9 of the ring is tapered internally, on a convex curvature 11, to a substantially line edge 12, and. with the contraction resulting from welding, the neck is drawn close into the ring leaving no gap.

While the invention has been described as a manhole structure, it may be used for other analogous purposes such as filler openings, the necks of and the like. For cans the clean interior of the structure is likewise an advantage.

l/Vhat I claim as new is:

A manhole or like construction on a sheet metal tank or shell comprising a tapered flanged-out neck on the shell, and a ring the upper portion of which is of relatively massive section to receive a closure and the lower comparatiwly thin portion of which is tapered on the inside to a feather edge, said feather-edged lower portion fitting down on the outside of the tapered neck forming a smooth external joint and being connected by a weld on the inside with the upper edge of the neck,

ANTHONY B. FEY, 

